Efficient access control for wireless sensor data

Although very developed in many sectors

(databases, filesystems), access control schemes are still

somewhat elusive when it comes to wireless sensor networks.

However, it is clear that many WSN systems--such

as healthcare and automotive ones--need a controlled

access to data that sensor nodes produce, given its high

sensitivity. Enforcing access control in wireless sensor

networks is a particularly difficult task due to the limited

computational capacity of wireless sensor nodes. In this

paper we present a full-fledged access control scheme for

wireless sensor data. We enforce access control through

data encryption, thus embedding access control in sensor

data units. We also propose a lightweight key generation